6661116101112 has 32 divisors (see below), whose sum is σ = 18166680276480. Its totient is φ = 2018520030560.

The previous prime is 6661116101063. The next prime is 6661116101117. The reversal of 6661116101112 is 2111016111666.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661116101117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12615749928 + ... + 12615750455.

It is an arithmetic number, because the mean of its divisors is an integer number (567708758640).

Almost surely, 2^{6661116101112} is an apocalyptic number.

It is an amenable number.

6661116101112 is an abundant number, since it is smaller than the sum of its proper divisors (11505564175368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6661116101112 is a wasteful number, since it uses less digits than its factorization.

6661116101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25231500403 (or 25231500399 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 6661116101112 in words is "six trillion, six hundred sixty-one billion, one hundred sixteen million, one hundred one thousand, one hundred twelve".